查询词典 mutation

The chrysalis, in the old man's care, began to show signs of mutation.

老人精心保护的那只蝶蛹里面也开始有了动静。

The operator of crossover, mutation and selection in HGA have function of macroscopically search, that deals with a large scale search, while the quasi-Newton operator has function of local search, and deals with a small circle search and problem of accelerating of search.

混合遗传算法中交叉算子、变异算子和选择算子的作用是宏观搜索，处理的是大范围搜索问题，而拟牛顿算子迭代运算的作用是局部搜索，即微观搜索，处理的是小范围搜索问题和搜索加速问题。

According to the research progress on citrinin, the strategies of citrinin control were described from the three aspects of fermentation technology, mutation breeding, and genetic engineering.

并结合国内外研究进展，从发酵工艺，诱变育种，基因工程三个层面阐述了控制红曲桔霉素产生的对策，并对桔霉素今后的研究方向进行了展望。

The codon 778 of exon 8 in WD gene was one of mutation hotspots in Chinese.

结论WD基因第8外显子778位密码子系中国人的突变热点之一。

Objective To investigate the point mutation of codon 12 of H-ras and K-ras in tissues of gastric carcinoma.

目的 探讨人胃癌组织中H-ras、K-ras基因第12密码子点突变情况及意义。

The codon 64 mutation of β3AR gene might be the risk factor of insulin resistance.

β3AR基因突变可能是与胰岛素抵抗有关疾病的共有危险因素。

Mountain fastness and person pork search have countless mutation, there is much appearance to be shown colorfully on the net.

山寨和人肉搜索有无数个变种，在网上有多姿多彩的展现。

The aim of the dissertation is to try to give a substantial evidence for the opinions of history comparative linguistics at language variation providing the individual cases and to try to make the elucidation: The main reason that language variation produce is to not only and only is a mutation of inner part system because of the language with regulation,...

力图为历史比较语言学在语言变异方面的论题提供一个可资佐证的个案，试图说明：语言变异产生的主要原因不仅仅是由于语言系统内部的突变和调节，一些外部因素诸如人们的民族语言心理态度、性别、年龄、经济的向心力等等也能在语言的变异中产生相当大的作用。

In this algorithm, first, a crowed comparison operator is used to sort and select individuals according to the characteristics of multi-objective optimization. Then, a non-uniform mutation operator is applied to the observation populations to preserve the convergency of the solutions and to improve the precision of local search. Finally, a diversity-preserving operator is employed to delete the observation populations for the purpose of preserving the solution diversity.

首先，根据多目标优化特点，使用多目标密度比较算子对量子种群进行排序和筛选；然后，应用非均匀变异算子对观测种群进行变异以保持解的收敛性并提高局部搜索的能力；最后，使用多样性保持算子对观测种群进行删减以保持解的多样性。

Except that the specifications of the single-objective real-valued quantum-inspired evolutionary algorithm are kept, the proposed algorithm has three main features to enhance the RQIEA. First, the crowed comparison operator is used to sort and select individuals in multi-objective sense. Second, the non-uniform mutation operator is applied to improve the precision for local search and to preserve the convergency for the solutions. Third, the diversity preserve operator is proposed to maintain the diversity.

该算法除保留求解单目标优化问题的实值量子演化算法的特点外，还有三个主要特征：首先，根据多目标优化特点，使用多目标密度比较算子对种群进行排序和筛选；其次，应用非均匀变异算子保持解的收敛性和提高局部搜索能力；再次，使用多样性保持算子来保持解的多样性。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。